A 50-megahertz fm carrier varies between 49.925 megahertz and ___

A 50-megahertz fm carrier varies between 49.925 megahertz and 50.075 megahertz 10,000 times per second.

What is its modulation index?

A. 5
B. 10
C. 15
D. 20

Show Answer

Answer: C

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